1、 .系統(tǒng)實現(xiàn)。（附上具體源代碼）3.1.MDS_ServerChat.javapackagemadingsheng;importjava.awt.*;importjavax.swing.*;importjava.awt.event.*;.*;importjava.io.*;publicclassMDSServerChatextendsJFrameimplementsActionListener,Runnableprivateintport=8888;privateServerSocketserver;privateSocketclient;privateBufferedReadercin;pr

2、ivatePrintWritercout;privateThreadchatThread;privateJPanelp1;privateJButtonstartButton;privateJButtonstopButton;privateJButtonexitButton;privateJScrollPanescrollPanel;privateJTextAreamessage;privateJPanelp2;privateJTextFieldserverMessage;privateJButtonmessageButton;privateJPanelp3;privateJComboBoxco

3、mbox1;privateJComboBoxcombox2;privateJMenuBarmenubar;privateJMenumenu,menu1;privateJMenuItemitem1,item2,item3,item4,item5;publicMDS_ServerChat()super(網(wǎng)絡(luò)聊天服務(wù)器);menubar=newJMenuBar();menu=newJMenu(更換背景色”)；menu1=newJMenu(幫助)；item1=newJMenuItem(灰色”)；item2=newJMenuItem(藍(lán)色”)；item3=newJMenuItem(白色”)；item4=

4、newJMenuItem(時間)；item5=newJMenuItem(其他)；menu.add(item1);menu.add(item2);menu.add(item3);menu1.add(item4);menu1.add(item5);menubar.add(menu);menubar.add(menu1);setJMenuBar(menubar);item1.addActionListener(newActionListener()publicvoidactionPerformed(ActionEvente)message.setBackground(Color.gray););it

5、em2.addActionListener(newActionListener()publicvoidactionPerformed(ActionEvente)message.setBackground(Color.blue););item3.addActionListener(newActionListener()publicvoidactionPerformed(ActionEvente)message.setBackground(Color.white););p1=newJPanel();startButton=newJButton(啟動)；stopButton=newJButton(停

6、止)；exitButton=newJButton(退出)；startButton.addActionListener(this);stopButton.addActionListener(this);exitButton.addActionListener(this);p1.add(startButton);p1.add(stopButton);p1.add(exitButton);add(p1,BorderLayout.NORTH);message=newJTextArea();scrollPanel=newJScrollPane(message,JScrollPane.VERTICAL_S

7、CROLLBAR_AS_NEEDED,JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);add(scrollPanel,BorderLayout.CENTER);p2=newJPanel();serverMessage=newJTextField(15);messageButton=newJButton(發(fā)送消息”)；messageButton.addActionListener(this);p2.add(serverMessage);p2.add(messageButton);add(p2,BorderLayout.SOUTH);p3=newJPanel

8、();combox1=newJComboBox();combox2=newJComboBox();combox1.addItem(-在線人數(shù)-);comboxl.addItem(不祥)；comboxl.addItem(不祥)；comboxl.addItem(不詳)；p3.add(combox1);add(p3,BorderLayout.EAST);p3.setBackground(Color.gray);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setBounds(800,100,500,400);setVisible(true);publi

9、cvoidactionPerformed(ActionEvente)if(e.getSource()=startButton)p1.setBackground(Color.green);tryserver=newServerSocket(port);/client=server.accept();catch(Exceptionex)chatThread=newThread(this);chatThread.start();startButton.setVisible(false);message.append(+n);elseif(e.getSource()=stopButton)chatTh

10、read=null;startButton.setVisible(true);if(cout!=null)cout.println(stop);tryif(server!=null)p1.setBackground(Color.red);server.close();catch(Exceptionexp)elseif(e.getSource()=exitButton)chatThread=null;if(cout!=null)cout.println(exit);System.exit(0);elseif(e.getSource()=messageButton)if(chatThread!=n

11、ull)cout.println(serverMessage.getText()+n);message.append(:+serverMessage.getText()+n);publicvoidrun()while(true)tryclient=server.accept();ServerChatThreadsct=newServerChatThread(client);Threadt=newThread(sct);t.start();catch(Exceptionex)publicstaticvoidmain(Stringargs)MDS_ServerChatserverChat=newM

12、DS_ServerChat();classServerChatThreadimplementsRunnableprivateSocketclient2;ServerChatThread(Socketclient)client2=client;publicvoidrun()while(true)trycin=newBufferedReader(newInputStreamReader(client2.getInputStream();cout=newPrintWriter(client2.getOutputStream(),true);Stringusername=cin.readLine();

13、if(username!=null)message.append(客戶：+username+進(jìn)入+n);cout.println(ok);Stringaline=;while(chatThread!=null)aline=cin.readLine();if(aline.equals(exit)break;elsemessage.append(username+說：+aline);catch(Exceptione)3.2.MDS_ClientChat.javapackagemadingsheng;importjava.awt.*;importjava.awt.event.*;importjava

14、x.swing.*;.*;importjava.io.*;publicclassMDSClientChatextendsJFrameimplementsActionListener.Runnableprivateintport=8888;privateSocketclient;privateBufferedReadercin;privatePrintWritercout;privateThreadchatThread;privateJPanelp1;privateJLabelusernameLabel;privateJTextFieldusername;privateJButtonloginB

15、utton;privateJButtonexitButton;privateJScrollPanescrollPanel;privateJTextAreamessage;privateJPanelp2;privateJTextFieldclientMessage;privateJButtonclientButton;privateJMenuBarmenubar;privateJMenumenu,menu1;privateJMenuItemitem1,item2,item3,item4,item5;publicMDS_ClientChat()super(網(wǎng)絡(luò)聊天客戶端”)；menubar=new

16、JMenuBar();menu=newJMenu(更換背景色”)；menu1=newJMenu(幫助)；item1=newJMenuItem(灰色”)；item2=newJMenuItem(藍(lán)色”)；item3=newJMenuItem(白色”)；item4=newJMenuItem(時間)；item5=newJMenuItem(其他)；menu.add(item1);menu.add(item2);menu.add(item3);menu1.add(item4);menu1.add(item5);menubar.add(menu);menubar.add(menu1);setJMenuBar

17、(menubar);item1.addActionListener(newActionListener()publicvoidactionPerformed(ActionEvente)message.setBackground(Color.gray););item2.addActionListener(newActionListener()publicvoidactionPerformed(ActionEvente)message.setBackground(Color.blue););item3.addActionListener(newActionListener()publicvoida

18、ctionPerformed(ActionEvente)message.setBackground(Color.white););p1=newJPanel();usernameLabel=newJLabel(用戶名)；username=newJTextField(10);loginButton=newJButton(登錄”)；exitButton=newJButton(退出)；loginButton.addActionListener(this);exitButton.addActionListener(this);p1.add(usernameLabel);p1.add(username);

19、p1.add(loginButton);p1.add(exitButton);add(p1,BorderLayout.NORTH);message=newJTextArea();scrollPanel=newJScrollPane(message,JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);add(scrollPanel,BorderLayout.CENTER);p2=newJPanel();clientMessage=newJTextField(15);clientB

20、utton=newJButton(發(fā)送消息)；clientButton.addActionListener(this);p2.add(clientMessage);p2.add(clientButton);add(p2,BorderLayout.SOUTH);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setBounds(100,100,500,400);setVisible(true);publicvoidactionPerformed(ActionEvente)if(e.getSource()=loginButton)if(loginSer

21、ver(username.getText()p1.setBackground(Color.green);chatThread=newThread(this);chatThread.start();elseif(e.getSource()=exitButton)chatThread=null;if(cout!=null)cout.println(exit);System.exit(0);elseif(e.getSource()=clientButton)if(chatThread!=null)cout.println(clientMessage.getText();message.append(

22、username.getText()+發(fā)送了+clientMessage.getText()+n);publicbooleanloginServer(Stringusername)tryclient=newSocket(localhost,port);cin=newBufferedReader(newInputStreamReader(client.getInputStream();cout=newPrintWriter(client.getOutputStream(),true);cout.println(username);Stringaline=cin.readLine();if(ali

23、ne.equals(ok)message.append(連接到服務(wù)器+n);returntrue;elsemessage.append(連接到服務(wù)器+n);returnfalse;catch(Exceptione)returnfalse;publicvoidrun()Stringaline=;trywhile(chatThread!=null&(aline=cin.readLine()!=null)if(aline.equals(stop)|aline.equals(exit)p1.setBackground(Color.red);message.append(服務(wù)器已中斷，請重新連接);break;elsemessage.append(message.append(服務(wù)器說：+aline);cin.close();cout.close();client.close();catch(Exceptione)publicstaticvoidmain(Stringargs)MDSClientChatcc=newMDSClientChat();4.課程總結(jié)。（對所完成的課程設(shè)計做較完整的總結(jié)